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Passing IDAM usb audio from Ipad USBc to a hub and out to Mac?

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Comments

  • edited March 4

    @Antos3345 said:
    Yeah, I tried to check a blog about comparing the two and it was down.

    heres something else i found out by experimentation... which has likely been known by the community of users who own a ipad & a audio 4c...
    but you can have the IDAM enabled on the mac as a audio feed from 1 ipad... and also run another ipad and have the audio playing into the secondary usb of the audio4c...
    essentially giving me 2 ipad sources to work with... *shrugs

  • edited March 4

    That's cool Is there much audio latency from the 4c?

  • edited March 4

    @Antos3345 said:
    That's cool Is there much audio latency from the 4c?

    Latency is dependant on the computer you are running albeit ipad, but as both units are connected via usb-cables the latency across both ipads... would be slightly different as 1 of them i used was a ipad air1 vs an ipad air 3 on the other connection
    but as far as latency practicality is concerned...you can always push the samplerate up to 96khz for low latency if need be, and also adjust the buffer size to a lower setting... but that will stress either the Mac... the ipad.. and will likely introduce problems... as it would any device
    getting the balance right is the key also the plugins you use etc etc...

    in this video @ 4:47 you can see the round trip latency im getting using the audio4c on the mac
    and do note... this is looping template im using has 4 instances of maschine running, 32 send tracks which are armed, all housing shaperbox2 plugins on each of them
    there is also 256 sampled loops hidden in the template where each looped sample can be sent to be processed in parallel with any or all of the 32 send tracks simultaneously for FX manipulation...
    as this was only a demo on a 8gb m1 mac mini the memory pressure was hitting its limits lol
    amyway... enough of the hot air LOL
    the latency can be seen at the top @ 4:47

    video aside
    ...and just to clarify the connections in my previous post
    1 First ipad is going through the m1 mac mini (IDAM enabled) which is effectively usb-port 1 of the Audio4c(but via mac mini usb hub which has a usb-c port providing charge
    ipad --->lightening cable to usb-c adapter--->USB-C female-----> usb-hagabisdock which is powered via 5v/2.5A charging source---> IDAM

    2 second ipad is going into the secondary port of the audio4c by way of the (usb-camera kit and connect via usbhub
    Ipad ---> powered usb camera dongle--->usb hub---->usbA to Usb-c cable ----> secondary port of AUDIO4c

  • Thanks for your helpful and descriptive response! I will use this for future reference when adjusting latency.
    Cool video!!

  • I don't know if this applies to the present discussion exactly, but I found that I MUST use a powered USB hub in order to get reliable IDAM performance. When I was plugging from iPad Pro's USB C directly into one of my Mac Mini's USB 3 ports, I was getting crackling audio and latency. When I plugged into an Anker powered USB 3 hub connected to the Mac Mini, all my IDAM issues went away.

    Somebody said that it has to do with the iPad not getting enough power from the Mac's USB ports. It could be, since I have many USB devices connected to those ports.

    Also I recently found that I was getting occasional loss of MIDI to my two MOTU MTPs connected to the Mac through an unpowered USB hub. I would have to unplug and re-plug the USB cable to restore MIDI. That all went away when I switched to plugging the MTP directly into a Mac USB port.

    Anyway, just thought I'd throw this into the mix.

    Seems like if you have a lot of USB devices, sometimes you have to find the right way to connect everything to get the best performance. I'm about to add another USB 3 SSD to the mix.. New SSD arriving Thursday. Planning on connecting it to the Anker powered hub. Fingers crossed on that..

  • edited March 4

    @Lady_App_titude said:
    I don't know if this applies to the present discussion exactly, but I found that I MUST use a powered USB hub in order to get reliable IDAM performance. When I was plugging from iPad Pro's USB C directly into one of my Mac Mini's USB 3 ports, I was getting crackling audio and latency. When I plugged into an Anker powered USB 3 hub connected to the Mac Mini, all my IDAM issues went away.

    Somebody said that it has to do with the iPad not getting enough power from the Mac's USB ports. It could be, since I have many USB devices connected to those ports.

    Also I recently found that I was getting occasional loss of MIDI to my two MOTU MTPs connected to the Mac through an unpowered USB hub. I would have to unplug and re-plug the USB cable to restore MIDI. That all went away when I switched to plugging the MTP directly into a Mac USB port.

    Anyway, just thought I'd throw this into the mix.

    Seems like if you have a lot of USB devices, sometimes you have to find the right way to connect everything to get the best performance. I'm about to add another USB 3 SSD to the mix.. New SSD arriving Thursday. Planning on connecting it to the Anker powered hub. Fingers crossed on that..

    Super tips! I will try this too:) I am a little puzzled how you are plugging a powered USB C hub to your iPad then running a USB out to another hub from your Mac. If possible, could you take a photo of the connection from your iPad port? Does this powered Anker powered USB 3 have USB C out too?

  • edited March 5

    @Antos3345 said:

    Super tips! I will try this too:) I am a little puzzled how you are plugging a powered USB C hub to your iPad then running a USB out to another hub from your Mac. If possible, could you take a photo of the connection from your iPad port? Does this powered Anker powered USB 3 have USB C out too?

    I am not plugging a hub into the iPad. And it is not a USB-C hub.

    I just have a USB-C-to-USB-A cable going from the iPad’s USB-C port to a USB port on the hub. The hub is connected to the Mac, (The hub has four USB 2.0 ports, three USB 3.0 ports, plus headphone, HDMI, DVI, and Ethernet, all connected to one port on the Mac via a single USB 3 cable. I’m not using the other ports, only the USB.)

    Before l was connecting the iPad with USB-C-to-USB-A cable directly to the Mac. But apparently that was not supplying enough power to the iPad, because that same USB bus on the Mac was also powering several other devices, including external SSDs. Plugging the iPad into a powered hub, and then into the Mac, seems to provide the extra power needed to the iPad, and thus it improves IDAM performance. IDAM was unusable without the powered hub.

    The previous iPad Air with Lightning didn't require the hub for IDAM. But now with an M1 iPad Pro with USB-C, IDAM would not work without the hub. The iPad Pro with its bigger screen and M1 processor, etc. seem to require more juice.

    What I'm puzzled about is why one would need a hub connected to the iPad for IDAM. Just go directly from the iPad to the Mac with a single cable. That's what IDAM is about. But in my case, I needed the powered hub before going into the Mac.

  • It would be nice to be able to tell the iPad not to charge when you don’t want it to draw power.

  • @Lady_App_titude said:
    I don't know if this applies to the present discussion exactly, but I found that I MUST use a powered USB hub in order to get reliable IDAM performance. When I was plugging from iPad Pro's USB C directly into one of my Mac Mini's USB 3 ports, I was getting crackling audio and latency. When I plugged into an Anker powered USB 3 hub connected to the Mac Mini, all my IDAM issues went away.

    funnily enough i was having that issue of crackling when i was connecting through IDAM, and i wasnt sure why it was occurring... but now you mention the need for powered hubs... albeit the ipad receiving some charge, it has oddly removed the crackle in audio! As a result i make sure my ipad is now being charged whilst ipad is being used in any context with the Mac mini...

  • I wish Apple would just make the iPad accompany there other hardware with a simpler method. IDAM is better but far from how it should be in this age.

  • IDAM is pretty simple. One USB cable between devices sends audio and MIDI. No need for any other audio interface to make it work. Yes, it wold be nice if it passed audio both directions. It’s more about power management where the apparent issues arise. There really is nothing like IDAM on the PC which is a shame. USB obviously handles audio and MIDI OK.

  • yeah, it can work well when set up
    correctly.
    I got this working ok now.

  • Are the Thunderbolt 4-enabled iPad Pros (M1 and up) any better at this?

  • @sveinbjorn said:
    Are the Thunderbolt 4-enabled iPad Pros (M1 and up) any better at this?

    Better how?

    Latency might be better. I think audio quality (bitrate) would be the same. Features are the same.

  • edited March 5

    It's working better thanks:) I just had to adjust the buffer and settings in the audio. Maybe no need to purchase that expensive Iconnect Audio 4C if I already have an Arturia MiniFuse2.
    cheers!

  • @Antos3345 said:
    It's working better thanks:) I just had to adjust the buffer and settings in the audio. Maybe no need to purchase that expensive Iconnect Audio 4C if I already have an Arturia MiniFuse2.
    cheers!

    What would the MiniFuse2 be connected to? You can't connect it to the iPad when using iDAM.

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